"Black cells" can refer to a few different things, depending on the context. Here are some of the most common meanings:
- In Game of Thrones and A Song of Ice and Fire, the Black Cells are a level of the dungeons in the Red Keep. These cells are known for their dark and oppressive conditions.
- In biology, black cells (Bc) are a mutation in Drosophila (fruit flies) that causes spontaneous melanization of crystal cells, a hemocyte cell type producing phenoloxidases. This mutation leads to circulating black spots in the flies but also prevents them from melanizing upon injury.
- In the context of batteries, "black cell" can refer to a specific type of cathode material used in lithium-sulfur batteries. This material is known for its ability to store a high amount of energy.
- In Excel 2016, "black cells" can be a visual display issue, where cells in the workbook randomly appear filled with black. This can happen due to various reasons, such as corrupted data files.
- In beekeeping, "dark cells" can refer to cells in a honeycomb that are darker than normal, often due to repeated use. This discoloration can happen due to the deposition of propolis or other substances, and it might also be an indication of a disease.
- The term "black cell" can also be used in a more general sense to refer to a prison cell, especially one that is known for being particularly harsh or dangerous.
It's important to understand the context in which the term "black cells" is being used in order to determine its specific meaning.
